一起110 kV变电站母线PT断线分析

Analysis of a 110 kV Substation Bus PT Disconnection

PT是一次系统与二次系统之间的重要联络原件,其作用是将一次设备的高电压转换为二次回路的低电压,供测量表计和继电保护装置用,能够准确反映电气设备的运行状态和故障情况。110 kV变电站母线PT断线后影响较大,需快速判准确断查找处理。基于此,阐述了PT的基本原理,分析了某变电站110 kV母线PT断线的现象及处理过程。

PT is an important contact element between the primary system and the secondary system.Its main function is to convert the high voltage of the primary equipment into the low voltage of the secondary circuit,which is used for measuring meters and relay protection devices,and can accurately reflect the operation status and fault condition of electrical equipment.The impact of 110 kV substation bus PT disconnection is great,so it needs to quickly judge and accurately find out.The basic principle of PT is expounded,and the phenomenon and treatment process of 110 kV bus PT are analyzed.